<html><head>
<style>
p { width: 13em; border: 1px solid black; }
p span { white-space: nowrap; }
a { color:pink; }
</style>
</head>
<body>
<!-- A prewrap text frame should be able to record a break opportunity -->
<p><a style="white-space:pre-wrap;">mmmmmmmmmm m</a>mmmmmmmmm</p>
<!-- A 'pre' text frame should be able to record a break opportunity at its start -->
<p>m <a style="white-space:pre;">mmmmmmmmmm</a>mmmmmmmmm</p>
</body>
</html>
